[Lldb-commits] [lldb] [lldb] Add frame recognizers for libc++ `std::invoke` (PR #105695)

[Petr Hosek via lldb-commits]

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@@ -53,10 +54,32 @@ class LibCXXFrameRecognizer : public StackFrameRecognizer {
 
 public:
   LibCXXFrameRecognizer()
-      : m_hidden_function_regex(
-            R"(^std::__1::(__function.*::operator\(\)|__invoke))"
-            R"((\[.*\])?)"    // ABI tag.
-            R"(( const)?$)"), // const.
+      : m_hidden_regex{
+            // internal implementation details of std::function
+            //    std::__1::__function::__alloc_func<void (*)(), std::__1::allocator<void (*)()>, void ()>::operator()[abi:ne200000]
+            //    std::__1::__function::__func<void (*)(), std::__1::allocator<void (*)()>, void ()>::operator()
+            //    std::__1::__function::__value_func<void ()>::operator()[abi:ne200000]() const
+            RegularExpression{""
+              R"(^std::__[0-9]*::)" // Namespace.
+              R"(__function::.*::operator\(\))"
+              R"((\[.*\])?)"    // ABI tag.
+              R"(( const)?$)"}, // const.
+            // internal implementation details of std::invoke
+            //   std::__1::__invoke[abi:ne200000]<void (*&)()>
+            RegularExpression{
+              R"(^std::__[0-9]*::)" // Namespace.
+              R"(__invoke)"
----------------
petrhosek wrote:

libc++ ABI namespace doesn't have to be just a number, it can be any [string that starts with `__`](https://github.com/llvm/llvm-project/blob/c557d8520413476221a4f3bf2b7b3fed17681691/libcxx/CMakeLists.txt#L197). For example, in some of our Google projects we use `__ktl` and `__pw`. [libFuzzer uses `__Fuzzer`](https://github.com/llvm/llvm-project/blob/52ae891036e3ab1f668eb103c46ca57257901c6b/compiler-rt/lib/fuzzer/CMakeLists.txt#L166) in its internal libc++ build.

https://github.com/llvm/llvm-project/pull/105695